Studied under SaintGermanus of Auxerre. Monk under the direction of Saint Cadoc. Founded the influential abbey of Llan-Illtut (Llantwit Major), which housed hundreds of monks, and became home to many Welshsaints. Defended his people against incursions from the north. To relieve famine, he assembled, stocked and led several corn ships to Brittany; in gratitude, some villages and churches there are named for him.